The COMAUX1= option
specifies the first auxiliary communication access method. For example,
you can specify COMAMID=XMS and COMAUX1=TCP. These specifications
indicate that the primary method of communication is cross-memory
services. If this access method is unable to establish a connection,
TCP/IP communication is attempted.
If the COMAUX1= option
is specified in a destination (server) session, it defines additional
communication support to be initialized. In an originating (user)
session, it specifies that the communication access method should
try to connect to the destination session if the initial COMAMID-based
attempt is unsuccessful. Because only
z/OS has available an alternate
communications access method in Version 9 SAS, this option is likely
not useful on other host types.